Method of treating aqueous emulsions of tar



' conditions,- the tar forming in such case with Patented 0 3o-,19z8.

NITED STATES;

' I METHOD OF TREATING A oUEoiIs-nnULsIoNs BIRGER :ronnsoixr, or srrocxnomvr, swnnn vn in Drawing. Application filed March's; 1925, [Serial N 13, 37, and an Sweden March 12 192, 4, 7

' This invention relates to an improvedmethod of treating emulsions and more espej tained oriis' somewhat increased. The-water can thenbe drawn oil? from z'tboveortheftar cially to a method of separatingthe Water from aqueous emulsions of tar. 7

It happens sometimes that aqueous emul sions are formed in gas Works under certain the Water an emulsionwhich makesjthe tar practically valueless. i I 1 The object of the present invention is to remove the emulsive or colloidal state in such.

ble in the tar constituent of the emulsion'bu t, substantially insoluble in wvater. "Such acids are for'instance rosin acid,,oleic acid, stearic 'acid, palmitic acid, arachidic' acid and lino-i lenic acid. vi

Emampler To an emulsion consisting oi about 49.5% by Weight of tar and about" 49.5% by Weightof Water and about 1% by Weight of ammonia 2% by Weight of oleic acid is added and intimately mixedwith the emulsion at'a temperature of about 70 C] The oleic acid is dissolved by the tar oils and by this the equilibrium of the emulsion is disturbed so that the Water is separated and soluble in the tar constituent of the emulsion V and leaving the mixture tostand at atemperarises .When' the-i tar emulsion leit'jto a for sometime :Wllile the, temperature is main-- be drawn off from belovvgk The separation'of the Watercan be acceleratedby centrifuging V v V thelemulsion when the addedoleic acid. has dissolved in the tar oils. p r What I claim isz-Q 1. Method of separating aqueous emulsions of tar into their constituents, consisting mixing the emulsion "with ;a -carboxy maid- 0' which is substantially insoluble in Water but soluble in the my constituent of the emul sion and leaving themixture to stand at an. 'jl f elevated temperature'until the water is sepa-f 5 rated from thetar. v 1 j 7 2; Method ofseparating aqueous'emulsions f oftarinto their'constituents,consisting in mixing .the emulsion YW ith a carboxy' acid which issubstantially insoluble in water but I separated from the tar, V I In testimony whereof I have sig d my name; I I, v BInGE r oH sou;, iv

tur'eof about to C. until the; Water is 1 

